He co-founded Heptagon Records to distribute his own recordings and that of other musicians, such as guitarist Benny Jansson and bassist Magnus Rosén. Johansson auditioned for Dream Theater after Kevin Moore left the band in 1994 but due to many delays by the band in making a decision he instead joined Finnish power metal band Stratovarius. Since 1995 he has remained in Stratovarius, and still releasing solo albums and appearing as a guest or session musician in other projects.

In 1993, Johansson co-founded a progressive blues metal project, The Johansson Brothers, and recorded a self-titled record. In 1996, with a different line-up, they recorded another album, Sonic Winter, this time under the name “Johansson”, with Yngwie Malmsteen guesting on guitar. The last Johansson record, The Last Viking, a more “European metal” oriented album, was released in 1999 with special guests Michael Romeo and Göran Edman.

Johansson is son of Swedish jazz pianist Jan Johansson and brother of Ex-HammerFall drummer Anders Johansson. He is highly influenced by classic Rock keyboardists like Don Airey, Eddie Jobson and Jon Lord. In 1982, the classically trained Johansson left the jazz fusion band Slem and joined the Swedish metal band Silver Mountain, which also included Anders. In 1983 he left Sweden for California and joined guitarist Yngwie Malmsteen as a member of his band, Rising Force. Numerous records and world tours ensued and he stayed with Yngwie until 1989. Johansson also played with the band Dio between 1989 and 1990. Like Anders, he began an ongoing collaboration with Jonas Hellborg in 1989 which has resulted in several progressive and avant-garde recordings, including Dissident, Unseen Rain (an acoustic piano trio record with Ginger Baker on drums) and the hard core progressive fusion record, E.

Jens Ola Johansson (born 2 November 1963, Stockholm, Sweden) is a Swedish keyboardist and pianist who currently plays in the Finnish power metal band Stratovarius and Ritchie Blackmore’s rock project Rainbow. He is notable for his high-speed neoclassical and fusion style.